Major municipalities from Spain

At the next plot we can see the six only municipalities from Spain with more than 500.000 people and their area in km^2.

library(plotly)
## Loading required package: ggplot2
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## Attaching package: 'plotly'
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##     filter
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##     layout
cities <- data.frame(name = c("Madrid", "Barcelona", "Valencia", "Sevilla", "Zaragoza", "Málaga"),
    pop = c(3334730, 1664182, 800215, 691395, 681877, 578460),
    area = c(604.45, 101.35, 134.65, 140.8, 973.78, 398.25),
    col = c("> 1 million", "> 1 million", "> 750 thousand", "> 500 thousand", "> 500 thousand", "> 500 thousand"))
plot_ly(cities, x = cities$pop, y = cities$area, mode = "markers", color = as.factor(cities$col))
## No trace type specified:
##   Based on info supplied, a 'scatter' trace seems appropriate.
##   Read more about this trace type -> https://plotly.com/r/reference/#scatter